There is at least one model of TCL TV that has an Roku OS in it. Pairing is impossible unless you follow this:
When it asks for the model of the TV, use the entry field to enter TCL-ROKU. The dash is important. The pairing tables list TCL and ROKU, but do not list TCL with ROKU, you need to make the entry to find the pairing.
You are very welcome indeed. I am a techie of quite a number of year myself. I was frustrated when the "techie" at Rogers tried again and again to find a solution then scheduled a visit. So i put my logical head to it and disovered the problem. I just wnated to share this in the hopes of saving someone else the problem.